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柔性配电网的最大供电能力模型
引用本文:肖峻,刚发运,黄仁乐,舒彬,杨楠,余潇潇. 柔性配电网的最大供电能力模型[J]. 电力系统自动化, 2017, 41(5): 30-38
作者姓名:肖峻  刚发运  黄仁乐  舒彬  杨楠  余潇潇
作者单位:智能电网教育部重点实验室, 天津大学, 天津市 300072,智能电网教育部重点实验室, 天津大学, 天津市 300072,国网北京市电力公司, 北京市 100031,北京电力经济技术研究院, 北京市 100055,国网北京市电力公司, 北京市 100031,北京电力经济技术研究院, 北京市 100055
基金项目:国家高技术研究发展计划(863计划)资助项目(2015AA050102);国家自然科学基金资助项目(51277129)
摘    要:提出了柔性配电网(FDN)的最大供电能力(TSC)模型与计算方法。首先,提出了FDN的概念,FDN利用电力电子开关构成的柔性开闭站(FSS)将多回馈线联络组网,采用能灵活控制潮流的柔性闭环运行方式。其次,提出了FDN的TSC模型与求解方法,模型计及了FSS对负荷的柔性转带策略。最后,搭建典型组网形态下不同情况的FDN验证所述方法。与传统配电网TSC对比发现:FDN的TSC总量既有提升的情况也有不变的情况,文中分析了原因。从TSC角度看,FDN的优势在于:1TSC在FDN实际运行中更易实现,达到TSC时FDN允许馈线上负荷任意分布,而传统配电网只有在负荷满足特定分布时才能达到TSC;2达到同等TSC时,FDN的组网结构更简单。所述方法已应用于国内外首个多端柔性闭环中压配电网示范工程的方案论证。

关 键 词:柔性配电网;最大供电能力;柔性开闭站;柔性闭环;示范工程
收稿时间:2016-07-13
修稿时间:2016-12-16

Total Supply Capability Model for Flexible Distribution Network
XIAO Jun,GANG Fayun,HUANG Renle,SHU Bin,YANG Nan and YU Xiaoxiao. Total Supply Capability Model for Flexible Distribution Network[J]. Automation of Electric Power Systems, 2017, 41(5): 30-38
Authors:XIAO Jun  GANG Fayun  HUANG Renle  SHU Bin  YANG Nan  YU Xiaoxiao
Affiliation:Key Laboratory of Smart Grid of Ministry of Education(Tianjin University), Tianjin 300072, China,Key Laboratory of Smart Grid of Ministry of Education(Tianjin University), Tianjin 300072, China,State Grid Beijing Electric Power Company, Beijing 100031, China,Beijing Electric Power and Economic Research Institute, Beijing 100055, China,State Grid Beijing Electric Power Company, Beijing 100031, China and Beijing Electric Power and Economic Research Institute, Beijing 100055, China
Abstract:This paper proposes a total supply capability(TSC)model and the solution algorithm for flexible distribution network(FDN). Firstly, FDN is defined as a distribution network, which operates in closed loop with flexible control of power flow when multiple feeders are linked together by a flexible switching station(FSS)composed of electronic switches. Secondly, the model and the solution algorithm of TSC for FDN are proposed, the model based on a new flexible load transfer strategy. Finally, the proposed model and solution algorithm are tested through a typical FDN in different scenarios. The test result is compared with the traditional TSC model, showing that TSC will either increase or remain unchanged when a traditional grid is upgraded to FDN, the reason for which is analyzed. The advantages of FDN seen from the aspect of TSC are as follows. On one hand, the TSC is easier to achieve in the FDN since the load can flexibly be distributed in the system. In contrast, only when the load is distributed in a certain specific way, can the traditional distribution network achieve TSC. On the other hand, the network configuration of FND is more concise than that of traditional distribution network with the same TSC. The proposed method has been applied in the argumentation of the first domestic demonstration project of multi-terminals flexible closed-loop medium-voltage distribution network.
Keywords:flexible distribution network(FDN)   total supply capability(TSC)   flexible switching station(FSS)   flexible closed-loop   demonstration project
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